title: Phytotoxicities of inorganic arsenic and dimethylarsinic acid to Arabidopsis thaliana and Pteris vittata.
abstract: The mechanisms by which Pteris vittata (L.) hyperaccumulates arsenic (As) have not been fully elucidated. To investigate how P. vittata tolerates high concentrations of arsenite, we compared the toxicities of various As compounds to P. vittata and Arabidopsis thaliana (L.). The phytotoxicities of As species were found to be in the order of arsenite > arsenate > dimethylarsinic acid (DMAA) in A. thaliana, and in the order of DMAA > arsenate > arsenite in P. vittata. P. vittata calli displayed a weaker ability to absorb arsenite than arsenate. These results demonstrate that P. vittata possesses mechanisms of As accumulation and detoxification.
authors.affiliation: Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, People's Republic of China.
authors.forename: Wentao
authors.initials: W
authors.lastname: Dai
authors.forename: Xuexi
authors.initials: X
authors.lastname: Yang
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Wenzhong
authors.initials: W
authors.lastname: Xu
authors.forename: Zhenyan
authors.initials: Z
authors.lastname: He
authors.forename: Mi
authors.initials: M
authors.lastname: Ma
mesh_terms: D017360:Arabidopsis / Q000187:drug effects*; D001151:Arsenic / Q000633:toxicity*; D002101:Cacodylic Acid / Q000633:toxicity*; D032495:Pteris / Q000187:drug effects*; D012989:Soil Pollutants / Q000633:toxicity*
chemical_list: D012989:Soil Pollutants; D002101:Cacodylic Acid; D001151:Arsenic